Sente

The premier academic reference manager
for Mac OS X.
Sente 6 is the next-generation academic reference manager.

Sente helps you find, organize, review and cite the academic literature in your field, and it does it in ways that you have probably not thought possible before. Sente also helps you build and maintain your library of PDF files for these references, because having ready access to the full text of important articles can be critical. Sente also excels at properly formatting bibliographies in your papers, but you probably already knew that.